diff --git a/MMCore/MMCore.cpp b/MMCore/MMCore.cpp
index 7735b5257..a94118471 100644
--- a/MMCore/MMCore.cpp
+++ b/MMCore/MMCore.cpp
@@ -2543,6 +2543,12 @@ void CMMCore::snapImage() throw (CMMError)
             }
             waitForDevice(shutter);
          }
+
+         if (externalCallback_)
+         {
+            std::string cameraLabel = camera->GetLabel();
+            externalCallback_->onImageSnapped(cameraLabel.c_str());
+         }         
 		}catch( CMMError& e){
 			throw e;
 		}
@@ -2856,6 +2862,11 @@ void CMMCore::startSequenceAcquisition(long numImages, double intervalMs, bool s
       throw CMMError(getCoreErrorText(MMERR_CameraNotAvailable).c_str(), MMERR_CameraNotAvailable);
    }
    LOG_DEBUG(coreLogger_) << "Did start sequence acquisition from default camera";
+   if (externalCallback_)
+   {
+      std::string cameraLabel = camera->GetLabel();
+      externalCallback_->onSequenceAcquisitionStarted(cameraLabel.c_str(), numImages, intervalMs, stopOnOverflow);
+   }
 }
 
 /**
@@ -2889,6 +2900,10 @@ void CMMCore::startSequenceAcquisition(const char* label, long numImages, double
 
    LOG_DEBUG(coreLogger_) <<
       "Did start sequence acquisition from camera " << label;
+   if (externalCallback_)
+   {
+      externalCallback_->onSequenceAcquisitionStarted(label, numImages, intervalMs, stopOnOverflow);
+   }
 }
 
 /**
@@ -2994,6 +3009,11 @@ void CMMCore::startContinuousSequenceAcquisition(double intervalMs) throw (CMMEr
       throw CMMError(getCoreErrorText(MMERR_CameraNotAvailable).c_str(), MMERR_CameraNotAvailable);
    }
    LOG_DEBUG(coreLogger_) << "Did start continuous sequence acquisition from current camera";
+   if (externalCallback_)
+   {
+      std::string cameraLabel = camera->GetLabel();
+      externalCallback_->onSequenceAcquisitionStarted(cameraLabel.c_str(), -1, intervalMs, false);
+   }
 }
 
 /**
@@ -3020,6 +3040,11 @@ void CMMCore::stopSequenceAcquisition() throw (CMMError)
    }
 
    LOG_DEBUG(coreLogger_) << "Did stop sequence acquisition from current camera";
+   if (externalCallback_)
+   {
+      std::string cameraLabel = camera->GetLabel();
+      externalCallback_->onSequenceAcquisitionStopped(cameraLabel.c_str());
+   }
 }
 
 /**
diff --git a/MMCore/MMEventCallback.h b/MMCore/MMEventCallback.h
index 49ddc497c..0a27d95a9 100644
--- a/MMCore/MMEventCallback.h
+++ b/MMCore/MMEventCallback.h
@@ -86,4 +86,19 @@ class MMEventCallback
       std::cout << "onSLMExposureChanged()" << name << " " << newExposure << '\n';
    }
 
+   virtual void onImageSnapped(const char* name)
+   {
+      std::cout << "onImageSnapped()" << name << '\n';
+   }
+
+   virtual void onSequenceAcquisitionStarted(const char* name, long numImages, double intervalMs, bool stopOnOverflow)
+   {
+      std::cout << "onSequenceAcquisitionStarted()" << name << " " << numImages << " " << intervalMs << " " << stopOnOverflow << '\n';
+   }
+
+   virtual void onSequenceAcquisitionStopped(const char* name)
+   {
+      std::cout << "onSequenceAcquisitionEnded()" << name << '\n';
+   }
+
 };